II. MAGNETIC disturbances are closely connected with the Auiroræ; while in temperate zones they are the exception, they form the rule in Arctic regions, at least the instruments are almost in constant ...

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Map: Eurasian reed warbler breeding range (green) in Europe and variation in the geomagnetic signature (total magnetic intensity, magnetic inclination and magnetic declination). The natural migratory ...

Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map to guide them on their long-distance journeys. But it wasn't clear how the birds were solving the ...

AN account of a minute magnetic survey of a small district in Baden, adjacent to the Rhine, where there is considerable local magnetic disturbance, has been received from the author.1 Observations of ...